Even though renal blood flow accounts for nearly a quarter of cardiac output, the renal medulla operates in an environment with a scant supply of oxygen. The reason for this apparent discrepancy is thought to be threefold. Blood flow to the outer medulla is less than 50% of that received...
Myocardial perfusion is an important marker of cardiovascular health that is routinely evaluated clinically. Perfusion is measured most often using single photon emission computed tomography (SPECT) imaging, but magnetic resonance imaging (MRI) has many advantages over SPECT. Measuring perfusion quantitatively in ml/min/g would theoretically allow for improved characterization of cardiac...